Mybatis实现增删改查

log4j.properties

# Global logging configuration
log4j.rootLogger=ERROR, stdout
# MyBatis logging configuration...
log4j.logger.org.student=DEBUG
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

Customer:

package com.student.po;

public class Customer {
	private Integer id;
	private String username;
	private String jobs;
	@Override
	public String toString() {
		return "Customer [id=" + id + ", username=" + username + ", jobs=" + jobs + ", phone=" + phone + "]";
	}
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	public String getJobs() {
		return jobs;
	}
	public void setJobs(String jobs) {
		this.jobs = jobs;
	}
	public String getPhone() {
		return phone;
	}
	public void setPhone(String phone) {
		this.phone = phone;
	}
	private String phone;

}

CustomerMapper:

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
           "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
 
<mapper namespace="com.student.mapper.CustomerMapper">
	<select id="findCustomerById" resultType="com.student.po.Customer" parameterType="Integer">
		select * from t_customer where id = #{id}
	</select>
	<select id="findCustomerByName" parameterType="String" resultType="com.student.po.Customer">
		select * from t_customer where username like '%${value}'
	</select>
	<insert id="addCustomer" parameterType="com.student.po.Customer">
	   	insert into t_customer (username,jobs,phone)
	   	values(#{username},#{jobs},#{phone})
	</insert>
	<update id="updateCustomer" parameterType="com.student.po.Customer">
	 	update t_customer set
	 	username = #{username},jobs = #{jobs},phone=#{phone}
	 	where id = #{id}
	</update>
	<delete id="deleteCustomer" parameterType="Integer">
	delete from t_customer where id=#{id}
	</delete>
</mapper>

mybatis-config:配置文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" 
   "http://mybatis.org/dtd/mybatis-3-config.dtd">

<configuration>
	<environments default="mysql">
		<environment id="mysql">
			<transactionManager type="JDBC" />
			<dataSource type="POOLED">
				<property name="driver" value="com.mysql.jdbc.Driver" />
				<property name="url"
					value="jdbc:mysql://localhost:3306/mybatis" />
				<property name="username" value="root" />
				<property name="password" value="123456" />
			</dataSource>
		</environment>
	</environments>
	<mappers>
		<mapper resource="com/student/mapper/CustomerMapper.xml" />
	</mappers>
</configuration>

mybatisTest：测试文件

package com.student.test;

import java.io.InputStream;
import java.util.List;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import com.student.po.Customer;

public class MybatisTest {
	
	/*
	@Test
	public void findCustomerByIdTest() throws Exception{
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		Customer customer = sqlSession.selectOne("com.student.mapper.CustomerMapper.findCustomerById",1);
		System.out.println(customer.toString());
		sqlSession.close();
		
	}
	*/
	/*
	@Test
	public void findCustomerByNameTest() throws Exception{
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		
		List<Customer> customers = sqlSession.selectList("com.student.mapper.CustomerMapper.findCustomerByName");
		for (Customer customer :customers) {
			System.out.println(customer);
		}
		sqlSession.close();
		
	}
	*/
	/*
	@Test
	public void addCustomerTest() throws Exception{
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		
		Customer customer = new Customer();
		customer.setUsername("rose");
		customer.setJobs("ITboy");
		customer.setPhone("1234567654");
		int rows = sqlSession.insert("com.student.mapper.CustomerMapper.addCustomer",customer);
		if(rows>0)
		{
			System.out.println("您已经成功的插入了"+rows+"条数据");
		}
		else
		{
			System.out.println("执行插入操作失败！！！！");
		}
		sqlSession.commit();
		sqlSession.close();
		
	}
	*/
	/*
	@Test
	public void updateCustomerTest() throws Exception{
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		
		Customer customer = new Customer();
		customer.setId(6);
		customer.setUsername("rose");
		customer.setJobs("programmer");
		customer.setPhone("00000000");
		int rows = sqlSession.update("com.student.mapper.CustomerMapper.updateCustomer",customer);
		if(rows>0)
		{
			System.out.println("您已经成功的修改了"+rows+"条数据");
		}
		else
		{
			System.out.println("执行修改操作失败！！！！");
		}
		sqlSession.commit();
		sqlSession.close();
		
	}
	*/
	@Test
	public void deleteCustomerTest() throws Exception{
		String resource = "mybatis-config.xml";
		InputStream inputStream = Resources.getResourceAsStream(resource);
		SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
		SqlSession sqlSession = sqlSessionFactory.openSession();
		int rows = sqlSession.delete("com.student.mapper.CustomerMapper.deleteCustomer",6);
		if(rows>0)
		{
			System.out.println("您已经成功的删除了"+rows+"条数据");
		}
		else
		{
			System.out.println("执行删除操作失败！！！！");
		}
		sqlSession.commit();
		sqlSession.close();
		
	}
}